The AirPhoton3-wavelength Integrating Nephelometermeasures the light scattered by particulate matter, over the angular range 7 to 170o. Employing an innovative design, the forward and backward scattering measurements are made completely independently.  LED technology allows the nephelometerto make these measurements at 450 nm, 532 nm and 632 nm, and to a sensitivity < 10-7m-1.  Internal sensors measure and log temperature, relative humidity and pressure.

Small and compact, the 3-wavelength Integrating Nephelometeris enclosed in an environmentally protected case, ready for outdoor deployment in rugged conditions.  Power requirements are 15W @ 120 VAC and input power options include: 110/220 VAC, 50/60Hz with provided power supply, and regulated 12VDC from sampling station with provided power connector. Other powering options can be made available upon request such as operating from batteries or solar power. Optional heaters are available at the expense of additional power consumption. Data from the AirPhotonIN101 Integrating Nephelometeris saved in a removable SD memory card and can be linked to an external computer via RS485 using accessories available from Airphoton.  

Integrating NephelometerSpecifications (IN101)

•Dimensions:  9' x 10' x 24”

•Mass: 6.7 Kg

•Power requirements: 15W @120VAC

•Light source: LED

•Operating temperature: -30 to +45oC

•Optional external pump

•Wavelengths:  450, 532, and 632 nm

•Angular range: 7 to 90o;  90 to170o

•Full scattering = forward + back scattering

•Standard range: 0.0-3,000Mm-1

•Extended range:  20,000Mm-1(upon request)

•Lower detectable limit:<0.15 Mm-1(at 60 sec AVG)< 0.06 Mm-1 for Backscattering (60 sec AVG)

•Clean air reference option provides automatic zero for span calibration

•Data Interfaces: 4GB SD card, RS485 (optional) 

•Syncs to AeroExplorerfilter sampling station.

•Environmentally rugged.  No need for enclosure.

Optional Travelling Case 

An optional custom-made carrying case is available for the IN101 and IN102 nephelometersand their accessories. The case dimensions are: 31.3'x20.4'x12.2' and is outfitted with wheels and a retractable handle for easy transport. A similar case is also available for the AeroExplorerfilter sampling station.